How close can I install a keensert to the edge or side of my plate? what is your recommended diameter of the boss?

Keenserts are often installed at the side of a plate or close to the edge of a surface.

The danger exists, when installed to close that performance is influenced, and you do not obtain enough pull out strengths.

1) Keensert at the side of an edge

General rule is to install with a drill distance of (0,8mm minimum + 1/2 diameter of the drilled hole)
recommendation to put all kees as far as possible from the edge.

Example 1: With KNM8, outside diameter = M12, drill distance can be 6,8mm.

Example 2: With KNM5, outside diameter = M8, drill distance can be 4,8mm.

example 3: With KNHM20, outside diameter = M30, drill distance can be 15.8mm.

Tap marks may show on the flat side and the insert should be positioned with keys 45°to 90° (2 KEES) offset from the flat side.

2) Keensert in a boss

The general rule is to install the keensert in a boss with minimum outside diameter = 1,5 x diameter of the outside thread of the keensert

For example:

KNM8x1,25 with an outside diameter of M12 your boss diameter needs to be 18mm

KNM5x0,8 with an outside diameter of M8 your boss diameter needs to be 12mm

KNHM20x2,5 with an outside diameter of M30 your boss diameter needs to be 45mm